{
    "ok": true,
    "domain": "bristol.ac.uk",
    "generated_at": "2026-08-09T01:52:44-05:00",
    "cache": {
        "hit": true,
        "ttl": 0
    },
    "score": {
        "total": 80,
        "label": "Good",
        "categories": {
            "dns": 70,
            "mail": 95,
            "security": 65,
            "network": 65,
            "availability": 100
        },
        "category_weights": {
            "dns": 25,
            "mail": 20,
            "security": 25,
            "network": 10,
            "availability": 20
        },
        "items": [
            {
                "category": "dns",
                "title": "IPv4 (A)",
                "max_points": 30,
                "earned_points": 30,
                "lost_points": 0,
                "detail": "2 IPv4 address(es) detected."
            },
            {
                "category": "dns",
                "title": "IPv6 (AAAA)",
                "max_points": 10,
                "earned_points": 0,
                "lost_points": 10,
                "detail": "0 IPv6 address(es) detected."
            },
            {
                "category": "dns",
                "title": "Name server redundancy",
                "max_points": 20,
                "earned_points": 20,
                "lost_points": 0,
                "detail": "3 NS record(s); 2 or more required."
            },
            {
                "category": "dns",
                "title": "SOA record",
                "max_points": 10,
                "earned_points": 10,
                "lost_points": 0,
                "detail": "Authoritative zone record."
            },
            {
                "category": "dns",
                "title": "DNSSEC chain",
                "max_points": 15,
                "earned_points": 0,
                "lost_points": 15,
                "detail": "Both DS and DNSKEY are required."
            },
            {
                "category": "dns",
                "title": "CAA policy",
                "max_points": 5,
                "earned_points": 0,
                "lost_points": 5,
                "detail": "Certificate authority restriction."
            },
            {
                "category": "dns",
                "title": "DNS propagation",
                "max_points": 10,
                "earned_points": 10,
                "lost_points": 0,
                "detail": "Agreement between public resolvers."
            },
            {
                "category": "mail",
                "title": "MX records",
                "max_points": 20,
                "earned_points": 20,
                "lost_points": 0,
                "detail": "1 MX record(s)."
            },
            {
                "category": "mail",
                "title": "SPF",
                "max_points": 25,
                "earned_points": 25,
                "lost_points": 0,
                "detail": "SPF policy published."
            },
            {
                "category": "mail",
                "title": "DMARC",
                "max_points": 25,
                "earned_points": 25,
                "lost_points": 0,
                "detail": "DMARC policy published."
            },
            {
                "category": "mail",
                "title": "DKIM",
                "max_points": 20,
                "earned_points": 20,
                "lost_points": 0,
                "detail": "A DKIM selector was verified."
            },
            {
                "category": "mail",
                "title": "MTA-STS",
                "max_points": 5,
                "earned_points": 0,
                "lost_points": 5,
                "detail": "Mail transport policy."
            },
            {
                "category": "mail",
                "title": "TLS-RPT",
                "max_points": 5,
                "earned_points": 5,
                "lost_points": 0,
                "detail": "TLS reporting policy."
            },
            {
                "category": "security",
                "title": "Valid TLS certificate",
                "max_points": 55,
                "earned_points": 55,
                "lost_points": 0,
                "detail": "67 day(s) remaining."
            },
            {
                "category": "security",
                "title": "Certificate lifetime",
                "max_points": 10,
                "earned_points": 10,
                "lost_points": 0,
                "detail": "Full points require at least 30 days remaining."
            },
            {
                "category": "security",
                "title": "HTTP security headers",
                "max_points": 35,
                "earned_points": 0,
                "lost_points": 35,
                "detail": "0 of 9 evaluated headers detected."
            },
            {
                "category": "network",
                "title": "PTR reverse DNS",
                "max_points": 30,
                "earned_points": 30,
                "lost_points": 0,
                "detail": "PTR: bristol-web-dc2-vip.services.bris.ac.uk"
            },
            {
                "category": "network",
                "title": "IPv4 diversity",
                "max_points": 35,
                "earned_points": 35,
                "lost_points": 0,
                "detail": "Two or more IPv4 addresses receive full points."
            },
            {
                "category": "network",
                "title": "IPv6 connectivity",
                "max_points": 35,
                "earned_points": 0,
                "lost_points": 35,
                "detail": "AAAA availability."
            },
            {
                "category": "availability",
                "title": "DNS resolution",
                "max_points": 40,
                "earned_points": 40,
                "lost_points": 0,
                "detail": "At least one address family must resolve."
            },
            {
                "category": "availability",
                "title": "HTTP response",
                "max_points": 40,
                "earned_points": 40,
                "lost_points": 0,
                "detail": "HTTP/1.1 200 OK"
            },
            {
                "category": "availability",
                "title": "HTTPS final URL",
                "max_points": 20,
                "earned_points": 20,
                "lost_points": 0,
                "detail": "Final URL uses HTTPS."
            }
        ],
        "methodology": "Each category is normalized to 100. The total is the weighted sum: DNS 25%, Email 20%, Security 25%, Network 10%, Availability 20%.",
        "diagnostics": [
            {
                "level": "ok",
                "title": "IPv4 (A)",
                "detail": "2 IPv4 address(es) detected.",
                "category": "dns",
                "max_points": 30,
                "earned_points": 30,
                "lost_points": 0
            },
            {
                "level": "error",
                "title": "IPv6 (AAAA)",
                "detail": "0 IPv6 address(es) detected.",
                "category": "dns",
                "max_points": 10,
                "earned_points": 0,
                "lost_points": 10
            },
            {
                "level": "ok",
                "title": "Name server redundancy",
                "detail": "3 NS record(s); 2 or more required.",
                "category": "dns",
                "max_points": 20,
                "earned_points": 20,
                "lost_points": 0
            },
            {
                "level": "ok",
                "title": "SOA record",
                "detail": "Authoritative zone record.",
                "category": "dns",
                "max_points": 10,
                "earned_points": 10,
                "lost_points": 0
            },
            {
                "level": "error",
                "title": "DNSSEC chain",
                "detail": "Both DS and DNSKEY are required.",
                "category": "dns",
                "max_points": 15,
                "earned_points": 0,
                "lost_points": 15
            },
            {
                "level": "error",
                "title": "CAA policy",
                "detail": "Certificate authority restriction.",
                "category": "dns",
                "max_points": 5,
                "earned_points": 0,
                "lost_points": 5
            },
            {
                "level": "ok",
                "title": "DNS propagation",
                "detail": "Agreement between public resolvers.",
                "category": "dns",
                "max_points": 10,
                "earned_points": 10,
                "lost_points": 0
            },
            {
                "level": "ok",
                "title": "MX records",
                "detail": "1 MX record(s).",
                "category": "mail",
                "max_points": 20,
                "earned_points": 20,
                "lost_points": 0
            },
            {
                "level": "ok",
                "title": "SPF",
                "detail": "SPF policy published.",
                "category": "mail",
                "max_points": 25,
                "earned_points": 25,
                "lost_points": 0
            },
            {
                "level": "ok",
                "title": "DMARC",
                "detail": "DMARC policy published.",
                "category": "mail",
                "max_points": 25,
                "earned_points": 25,
                "lost_points": 0
            },
            {
                "level": "ok",
                "title": "DKIM",
                "detail": "A DKIM selector was verified.",
                "category": "mail",
                "max_points": 20,
                "earned_points": 20,
                "lost_points": 0
            },
            {
                "level": "error",
                "title": "MTA-STS",
                "detail": "Mail transport policy.",
                "category": "mail",
                "max_points": 5,
                "earned_points": 0,
                "lost_points": 5
            },
            {
                "level": "ok",
                "title": "TLS-RPT",
                "detail": "TLS reporting policy.",
                "category": "mail",
                "max_points": 5,
                "earned_points": 5,
                "lost_points": 0
            },
            {
                "level": "ok",
                "title": "Valid TLS certificate",
                "detail": "67 day(s) remaining.",
                "category": "security",
                "max_points": 55,
                "earned_points": 55,
                "lost_points": 0
            },
            {
                "level": "ok",
                "title": "Certificate lifetime",
                "detail": "Full points require at least 30 days remaining.",
                "category": "security",
                "max_points": 10,
                "earned_points": 10,
                "lost_points": 0
            },
            {
                "level": "error",
                "title": "HTTP security headers",
                "detail": "0 of 9 evaluated headers detected.",
                "category": "security",
                "max_points": 35,
                "earned_points": 0,
                "lost_points": 35
            },
            {
                "level": "ok",
                "title": "PTR reverse DNS",
                "detail": "PTR: bristol-web-dc2-vip.services.bris.ac.uk",
                "category": "network",
                "max_points": 30,
                "earned_points": 30,
                "lost_points": 0
            },
            {
                "level": "ok",
                "title": "IPv4 diversity",
                "detail": "Two or more IPv4 addresses receive full points.",
                "category": "network",
                "max_points": 35,
                "earned_points": 35,
                "lost_points": 0
            },
            {
                "level": "error",
                "title": "IPv6 connectivity",
                "detail": "AAAA availability.",
                "category": "network",
                "max_points": 35,
                "earned_points": 0,
                "lost_points": 35
            },
            {
                "level": "ok",
                "title": "DNS resolution",
                "detail": "At least one address family must resolve.",
                "category": "availability",
                "max_points": 40,
                "earned_points": 40,
                "lost_points": 0
            },
            {
                "level": "ok",
                "title": "HTTP response",
                "detail": "HTTP/1.1 200 OK",
                "category": "availability",
                "max_points": 40,
                "earned_points": 40,
                "lost_points": 0
            },
            {
                "level": "ok",
                "title": "HTTPS final URL",
                "detail": "Final URL uses HTTPS.",
                "category": "availability",
                "max_points": 20,
                "earned_points": 20,
                "lost_points": 0
            }
        ]
    },
    "dns": {
        "records": {
            "A": [
                "137.222.125.160",
                "137.222.180.160"
            ],
            "AAAA": [],
            "CNAME": [],
            "MX": [
                "0 bristol-ac-uk.mail.protection.outlook.com."
            ],
            "TXT": [
                "\"apple-domain-verification=kT4QDUuviV97WZEh\"",
                "\"IKVOWJEBKXPPJJGWB9Z0N7XUQSFAZXN7WGMIMQJLU\"",
                "\"access-domain-verification=d3cddef64aaf41f13db6da308ba3964b24b846ddc3902df1be00d3d0184818e9\"",
                "\"vmware-cloud-verification-c77286b2-681b-4ba9-8572-e90b8e3552a1\"",
                "\"d365mktkey=UCZVh5ufOSsg2C7JktpFH0vJTvOo3bbc6MkN1hNQEkcx\"",
                "\"anthropic-domain-verification-r57yrx=BcFbNlDquEPvssVi644E2Cq2x\"",
                "\"graphpad.com:domain-verification=ummDOp44PLBrp8-J_j-6tQ\"",
                "\"QuoVadis=3ef1eede-9303-43d0-994c-47eb873db310\"",
                "\"adobe-idp-site-verification=206237f6c740f0d2ca9689f4ca6321794db6e874f42f33d77fa41e63da01fa51\"",
                "\"QuoVadis=6f9343f9-3d02-4ba2-8193-43a92c35bb57\"",
                "\"ZOOM_verify_WrGbO-1QRZ26Z8m3hp_NJg\"",
                "\"access-domain-verification=0120f910b46cf31e561099004d7ecaf3bd0f9ff852d989492bec4a282d0c3ed3\"",
                "\"miro-verification=0f7d07a6003bc87a6792cef1c3ac2d135651476d\"",
                "\"brevo-code:b1414e0a234265a2faa294058248ae06\"",
                "\"onetrust-domain-verification=af5b9aa272b8428aa14d71530ccca896\"",
                "\"onetrust-domain-verification=6e07e108aa7e4b4f8ad5f141e9e72810\"",
                "\"A9922BFA-3D3E-4834-A4D7-B185DF8ED146\"",
                "\"google-site-verification=jKfq25rMyR3Z7aM2RNHfsJcoCm0LANqAxIS59rQlyro\"",
                "\"sign-in-app-verification=inqFC-DqfhoztSvRaCVTdI82OdHrkB6BkNVmsLv7oBc\"",
                "\"v=spf1 include:spf.protection.outlook.com include:_spf.google.com exists:%{ir}.spfx.bristol.ac.uk include:%{l}.spfx.bristol.ac.uk ~all\""
            ],
            "NS": [
                "irix.bris.ac.uk.",
                "ncs.bris.ac.uk.",
                "ns3.ja.net."
            ],
            "SOA": [
                "ncs.bris.ac.uk. hostmaster.bris.ac.uk. 2026080931 28800 7200 604800 3600"
            ],
            "CAA": [],
            "DS": [],
            "DNSKEY": [],
            "RRSIG": [],
            "NSEC": [],
            "NSEC3": [],
            "SRV": [],
            "NAPTR": [
                "100 10 \"s\" \"x-eduroam:radius.tls\" \"\" _radsec._tcp.bristol.ac.uk."
            ],
            "TLSA": [],
            "SSHFP": []
        },
        "ipv4": [
            "137.222.125.160",
            "137.222.180.160"
        ],
        "ipv6": []
    },
    "mail": {
        "spf": "v=spf1 include:spf.protection.outlook.com include:_spf.google.com exists:%{ir}.spfx.bristol.ac.uk include:%{l}.spfx.bristol.ac.uk ~all",
        "dmarc": "v=DMARC1; p=quarantine; rua=mailto:dmarc-rua@bristol.ac.uk,mailto:dmarc-rua@dmarc.service.gov.uk;",
        "dkim_selector": "selector1",
        "dkim_host": "selector1._domainkey.bristol.ac.uk",
        "dkim": "v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEArfAkDcGhzMgvY5ETAdyTBqPpOqt8BzVQR2zg59n/CweoAX5tNrP3rkO3R6ZB9WLTdyB6opMn5Lpl63gYuoc7HQi7TmPYSi+Zv5nCuLfqGfgFnFiI6y0Uxix44yI8XzlMtb5pf9xrmFReTGZtbwApfanCNabBPGB2coJptaYkZHHWMTEz3imwQxetP3WT+rxymR9zbn+D9B3OlG4VFvt6Up1kMlRAAzwXLgjig82Uzr9QslyTZbIqZvsFeZMQ5tqVubcUSIFNd0cdnfaTSIiKoo4khOAShp85EFjotBdk9n77lHYM1TOV+no44lpmJUqJH7DH8P2ro6OCUqx7N87lUQIDAQAB;",
        "spf_analysis": {
            "valid": true,
            "lookups": 4,
            "final": "~all",
            "message": "Within the estimated limit"
        },
        "dmarc_analysis": {
            "valid": true,
            "policy": "quarantine"
        },
        "bimi": "",
        "mta_sts": "",
        "tls_rpt": "v=TLSRPTv1; rua=mailto:tls-rua@mailcheck.service.ncsc.gov.uk"
    },
    "advanced": {
        "ptr": "bristol-web-dc2-vip.services.bris.ac.uk",
        "propagation": {
            "consistent": true,
            "results": [
                {
                    "provider": "Google",
                    "server": "8.8.8.8",
                    "result": [
                        "137.222.125.160",
                        "137.222.180.160"
                    ],
                    "time_ms": 142.19
                },
                {
                    "provider": "Cloudflare",
                    "server": "1.1.1.1",
                    "result": [
                        "137.222.125.160",
                        "137.222.180.160"
                    ],
                    "time_ms": 356.91
                },
                {
                    "provider": "Quad9",
                    "server": "9.9.9.9",
                    "result": [
                        "137.222.125.160",
                        "137.222.180.160"
                    ],
                    "time_ms": 370.92
                },
                {
                    "provider": "OpenDNS",
                    "server": "208.67.222.222",
                    "result": [
                        "137.222.125.160",
                        "137.222.180.160"
                    ],
                    "time_ms": 223.72
                },
                {
                    "provider": "AdGuard",
                    "server": "94.140.14.14",
                    "result": [
                        "137.222.125.160",
                        "137.222.180.160"
                    ],
                    "time_ms": 291.69
                }
            ]
        }
    },
    "ssl": {
        "available": true,
        "issuer": "Sectigo Limited",
        "subject": "www.bristol.ac.uk",
        "valid_from": "2025-10-12T19:00:00-05:00",
        "valid_to": "2026-10-15T18:59:59-05:00",
        "days_remaining": 67,
        "san": [
            "www.bristol.ac.uk",
            "bris.ac.uk",
            "bristol.ac.uk",
            "www.bris.ac.uk"
        ],
        "protocol": "TLSv1.2",
        "cipher": "ECDHE-RSA-AES128-GCM-SHA256"
    },
    "http": {
        "url": "https://www.bristol.ac.uk/",
        "status": "HTTP/1.1 200 OK",
        "http_version": "2",
        "headers": {
            "location": "https://www.bristol.ac.uk/",
            "server": "Apache",
            "connection": "close",
            "content-length": "89389",
            "date": "Sun, 09 Aug 2026 06:52:34 GMT",
            "last-modified": "Thu, 06 Aug 2026 13:04:21 GMT",
            "etag": "\"15d2d-6586086c2f28b\"",
            "accept-ranges": "bytes",
            "content-type": "text/html; charset=utf-8",
            "set-cookie": "cookiesession1=678A3F0C2FCDBBE26ACB2863458989E5;Expires=Mon, 09 Aug 2027 06:52:34 GMT;Path=/"
        },
        "security_checks": {
            "strict-transport-security": false,
            "content-security-policy": false,
            "x-content-type-options": false,
            "x-frame-options": false,
            "referrer-policy": false,
            "permissions-policy": false,
            "cross-origin-opener-policy": false,
            "cross-origin-embedder-policy": false,
            "cross-origin-resource-policy": false
        },
        "server": "Apache",
        "powered_by": ""
    },
    "webpage": {
        "url": "https://www.bristol.ac.uk/",
        "title": "Homepage |  University of Bristol",
        "description": "Official university site with information on undergraduate and postgraduate courses, research, teaching, study and departments. Located in Bristol, in the South West of England., Official university site with information on undergraduate and postgraduate courses, research, teaching, study and departments. Located in Bristol, in the South West of England.",
        "success": true,
        "error": "",
        "status": 206
    },
    "network": {
        "137.222.125.160": {
            "success": false,
            "country": "",
            "region": "",
            "city": "",
            "asn": "",
            "organization": "",
            "isp": ""
        },
        "137.222.180.160": {
            "success": false,
            "country": "",
            "region": "",
            "city": "",
            "asn": "",
            "organization": "",
            "isp": ""
        }
    },
    "smtp": {
        "host": "bristol-ac-uk.mail.protection.outlook.com",
        "ports": [
            {
                "port": 25,
                "open": false,
                "time_ms": 37.5,
                "banner": "",
                "error": "Network is unreachable"
            },
            {
                "port": 465,
                "open": false,
                "time_ms": 4020.7,
                "banner": "",
                "error": "Connection timed out"
            },
            {
                "port": 587,
                "open": false,
                "time_ms": 4048.8,
                "banner": "",
                "error": "Connection timed out"
            }
        ]
    },
    "visitor": {
        "ip": "216.73.217.62",
        "reverse": "",
        "country": "",
        "country_code": "",
        "region": "",
        "city": "",
        "latitude": null,
        "longitude": null,
        "isp": "",
        "organization": "",
        "asn": "",
        "timezone": "",
        "browser": "Other",
        "os": "Other",
        "language": "",
        "user_agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)",
        "is_bot": true,
        "cloudflare": false
    },
    "analysis_time_ms": 92.1
}